JPS5939247Y2 - Liquid level automatic stop valve - Google Patents

Description

[Detailed explanation of the invention] This invention is based on the idea that when storing liquid in a container, by manually opening the valve and placing the float in the desired position in the container, the liquid in the container will increase until it reaches the set position. This relates to a device that automatically opens the valve fully when the valve is opened.

Conventionally, in baths, there is an automatic liquid level valve that automatically stops the water supply at a preset position, but in the float type, the buoyancy of the float is converted into mechanical force, so it is not reliable unless the float ball is made a certain size. It had the disadvantage that it lacked functionality and could not be satisfied in the limited space if it was made large.

In addition, some valves operate when the faucet reaches the liquid level, but they have the disadvantage that it becomes difficult to confirm that the valve is fully open when the liquid level reaches the faucet.

Therefore, in view of the above drawbacks, the present invention has been improved and eliminated, and has a compact structure, high reliability, and allows for easy adjustment of the stop liquid level height. The present invention also provides an automatic liquid level stop valve that has the feature of being able to stop water supply with a manual lever.

The drawings will be described in detail below.

FIG. 1 is a top view of an automatic liquid level stop valve according to an embodiment of the present invention, and FIG. 2 is a side sectional view thereof.

Reference numeral 1 indicates a float that is installed at a position in the container where water is to be supplied, and floats when the liquid level rises to that position to close an opening at one end of a communication pipe 2, which will be described later. Reference numeral 2 indicates a second communication pipe, which will be described later. The working chamber 5' of the diaphragm is connected between the float 1 and the working chamber 5' of the diaphragm.

3 is a valve body, and 4 is a valve top cover.

Reference numeral 5 denotes a diaphragm, which together with the valve upper cover 4 forms a negative pressure action chamber 5' of the diaphragm.

A first communication pipe 6 extends from the negative pressure chamber 5' of the diaphragm to the downstream side of the valve 3 and is opened in the downstream direction.

Reference numeral 7 designates a valve seat within the valve, which receives a valve 7' attached to a valve shaft 10, which will be described later.

8 is a backing guide, 9 is a backing, and the valve part 7
．． 7' is kept watertight.

10 is a valve shaft, one end of which is connected to a connection point of a lever 16.22, which will be described later, and a diaphragm device 5,
5' and valve 7' are mounted with their operating directions aligned.

A manual lever 16 is rotatably attached to a manual lever fulcrum pin 19 on a lever mounting shaft 13 provided on a shaft mounting base 17 through an elongated hole 16'.

Further, 22 is a set lever, which is operated by a set lever pin 14 and a manual lever pin 15 via the valve shaft 10.
It is connected to a manual lever 16.

Each lever 16°22 has a bifurcated structure, and the set lever
22 is guided by sandwiching the set shaft 12.

The manual lever 16 and the set lever 22 are each provided with spring mounting pins 21 and 20 and are tensioned by the set spring 11.

Further, on the opposite side of the connecting end of the set lever 22, a set lever locking portion 23 is provided on the shaft mount 17, and the manual lever 1
6, set lever 22, etc., the operating range of the link mechanism is regulated.

That is, when the manual lever 16 is pushed down, the link mechanism lifts the valve shaft 10 to open the valve portion 7.7', and the diaphragm 5 is inserted into the countersunk hole 17' on the lower surface of the shaft mounting base 17 to apply the pressure of the spring 11 and the cell I. - The lever locking portion 23 holds the lever in a position where it can be comfortably brought into contact with the lever.

Also, when the diaphragm devices 5, 5' work, the connection point of the link mechanism is pulled down to the opposite side, closing the valve parts 7, 7' and returning the diaphragm 5 to the normal position (the position shown), and applying the pressure of the spring 11 and the set lever locking part. 23.

Reference numeral 18 denotes a manual release cock, and when the valve is opened, atmospheric pressure is supplied to the negative pressure action chamber 5' of the diaphragm, the action of the diaphragm device is stopped, and the valve can be opened and opened simply by operating the manual lever 16. This allows it to be closed.

Next, the operation of this device will be explained.

First, the float 1 is placed at a position where the liquid level in a container (not shown) should be stopped, and when the manual lever 16 is moved downward, the liquid is moved between the opened valve 7' and the valve seat 7 of the valve body 3. It passes through the gap and begins to flow.

Next, attach the two points of the spring mounting pins 20 and 21 to the spring 1.
When the link mechanism connection point of lever pin 14.15 is above the straight line pulled in step 1, the valve is fully opened.
The valve is fully opened and liquid flows into the container.

Air from the negative pressure chamber 5' of the diaphragm is sucked into the communication pipe 6 in the same direction as the flowing liquid (toward the faucet), but at the same time air is also supplied from the atmosphere from the second communication pipe 2. Thus, the negative pressure chamber 5' of the diaphragm is maintained at atmospheric pressure.

Next, when the liquid level of the container reaches the set position of the float 1, the lower part of the second communication pipe 2 is closed.

From this point on, the negative pressure action chamber 5' of the diaphragm becomes negative pressure, and when the degree of vacuum reaches a certain value, the diaphragm 5 is pulled downward, and the link connecting point 14. 15 is lower, spring 1
1 and the vacuum pressure applied to the diaphragm 5, the valve shaft 10 presses the valve 7' against the valve seat 7, fully opening the valve and stopping the flow of liquid.

Once the valve is closed, spring 1
Due to the back pressure applied to valve 7' of No. 1, the valve does not open automatically.

When the valve 7' is closed and no liquid flows, air enters the negative pressure chamber 5' of the diaphragm from the first communication pipe 6 and becomes atmospheric pressure.

When used as a manual valve, opening the manual release valve 18 disables the diaphragm device and allows the valve to be opened and closed freely using only the manual operation lever 16.

As explained above, this invention is a water pipe faucet type valve that has a valve seat 7 in the middle of the inlet and outlet, and the valve 7' is movable up and down with respect to the valve seat 7 via the valve shaft 10. A shaft mount 17 is mounted on the valve top cover 4 of the main body 3 with the diaphragm 5 interposed between them, and the valve shaft 10 is connected to the diaphragm 5.The valve shaft 10 is extended above the diaphragm 5, and a manual lever is attached to this extended end. One end of the set lever 16 and one end of the set lever 22 are symmetrically pivoted, and the middle of both levers 16.22 is symmetrically pivoted on the shaft mount 17 to serve as a fulcrum for both levers 16.22. , and both ends of a tension type set spring 11 are hooked from the fulcrums of both levers 16.22 to symmetrical positions according to the Yu H law, and both end latching points of this spring 11 are attached to the fulcrums of both levers 16.22. When the connecting straight line is crossed to the "-" side, the valve 7 is
' is brought into pressure contact with the valve seat 7, and this state is maintained by a set spring 11, and an airtight diaphragm action chamber 5' is provided between the diaphragm 5 and the valve top cover 4.
A first communication pipe 6 and a second communication pipe 2 are formed in this chamber 5'.
One end is open-connected, the other end of the first communication pipe 6 is provided to the outlet of the water pipe faucet-type valve body 3 so that negative pressure is generated when water flows out, and the other end of the second communication pipe 2 is The above valve body 3
is opened into a float chamber set at a position corresponding to the desired water level in the container to which water is to be supplied, and this opening position is always set at a position lower than the height of the outlet of the valve body 3, and the diaphragm Since a manual release cock 18 is provided in the action chamber 5', in order to automatically stop the liquid level, the manual release cock 18 is closed and the manual lever 16 is pushed down to open the valve 7 via the valve shaft 10. ′ is pulled up, the valve is held open by the set spring 11, and water supply to the container starts.All that is left is to do this when the water level in the container reaches the water level set at the lower end of the second communication pipe 2.
Since the atmospheric suction from the second communication pipe 2 is stopped, the negative pressure generated in the first communication pipe 6 acts on the diaphragm action chamber 5', and eventually the atmospheric pressure in the upper chamber of the diaphragm 15 and the diaphragm action chamber 5' increase. When the pressure difference becomes larger than the valve-opening force of the set spring 11, the valve shaft 10 rapidly moves downward together with the diaphragm 5, causing the valve 7' to close to the valve seat 7.
The water supply is automatically stopped by pressing the levers 16 and 22, and accordingly, both levers 16 and 22 are reversed upward.
The set spring 11 automatically maintains the valve closed state.

In particular, the lower end opening position of the second communication pipe 2 is set lower than the faucet, making it easy to check whether the valve has automatically closed or not, and allowing the water supply control water level to be freely set. Since it is not restricted by the height of the water, it has the feature that it can be set to any desired water level.

Furthermore, since a manual release cock is provided in the diaphragm action chamber 5, when it is left open, it can be used like a normal manually operated water faucet, and therefore, it can be switched freely between manual and automatic modes. It has features that can be used for water supply to bathtubs, etc. in ordinary homes, and for other purposes.

Moreover, since it is only necessary to add a diaphragm device and a trouble link mechanism to a conventional water faucet, the structure is very simple and can be implemented at low cost.Moreover, the form is compact, and it is easy to install and handle. There is.

[Brief explanation of the drawing]

The drawings show an automatic liquid level shutoff valve according to an embodiment of the present invention, with FIG. 1 being a top view thereof and FIG. 2 being a side sectional view thereof. 1... Float, 2, 6... Second and first communication pipes, 3... Valve body, 4... Valve top cover, 5... ...Diaphragm, 5'...
・Negative pressure action chamber, 7... Valve seat, 7'...
Valve, 8... Backing guide, 9...
Backing, 10... Valve shaft, 11...
...Set spring, 12...Set shaft, 1
3... Lever mounting shaft, 14... Set lever pin, 15... Manual lever pin, 16...
...Manual lever, 17 ...Shaft mounting base, 1
8...Manual release cock, 19...Manual lever fulcrum pin, 20.21...Spring mounting pin, 22...Set lever 123... ...
Set lever locking part.

Claims (1)

[Scope of utility model registration request] A diaphragm is mounted on the valve top cover 4 of a water pipe faucet type valve body 3 which has a valve seat 7 between the inlet and outlet, and the valve 7' is movable up and down with respect to the valve seat 7 via a valve shaft 10. 5, attach the shaft mounting base 17, and then attach the valve shaft 10.
is connected to the diaphragm 5, and the valve shaft 10 is extended to one side beyond the diaphragm 5, and one end of the manual lever 16 and one end of the set lever 22 are pivotally connected to this extended end in a symmetrical manner. .22 middle part is shaft mounting base 1
7 in a symmetrical manner to serve as a fulcrum for both levers 16.22, and from the fulcrums of both levers 16.22, both ends of a tension type set spring 11 are hung between symmetrical positions according to the Yu H rule. When the spring 11 is stopped and the latching points at both ends of the spring 11 exceed the straight line connecting the supporting points of both levers 16.22, the valve 7' is pressed against the valve seat 7 via the valve shaft 10, and this state is maintained. An airtight diaphragm action chamber 5' is formed between the diaphragm 5 and the valve top cover 4 so as to be held by a set spring 11, and one end of the first communicating pipe 6 and the second communicating pipe 2 are connected to this chamber 5'. Open connection and first communication pipe 6
The other end of the second communicating pipe 2 is provided at the outlet of the water pipe faucet-shaped valve body 3 so that negative pressure is generated when water flows out, and the other end of the second communicating pipe 2 is provided in the container into which the valve body 3 is to supply water. Open the float chamber at a position corresponding to the desired water level,
This opening position is always set lower than the height of the outlet of the valve body 3, and the diaphragm action chamber 5
A liquid level automatic stop valve characterized in that a manual release cock 18 is provided at '.